CN115002590B

CN115002590B - Speaker module and earphone

Info

Publication number: CN115002590B
Application number: CN202111109352.7A
Authority: CN
Inventors: 刘金华; 褚建飞; 李运海; 王传果
Original assignee: Beijing Honor Device Co Ltd
Current assignee: Beijing Honor Device Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2023-05-16
Anticipated expiration: 2041-09-22
Also published as: WO2023045692A1; EP4262232A4; EP4262232A1; EP4262232B1; CN115002590A; US20240080610A1

Abstract

The application provides a speaker module and earphone. The speaker module is used for earphone, and earphone includes the shell. The speaker module includes: a first speaker unit and a second speaker unit. The surface of the first vibrating diaphragm group of the first speaker unit faces the first side, the second speaker unit is located on one circumferential side of the first speaker unit, the second speaker unit sounds towards the first side, and the sound production frequency of the second speaker unit is larger than that of the first speaker unit. According to the earphone disclosed by the embodiment of the application, the whole sound output effect of the earphone is improved. Simultaneously, can also be favorable to improving the travelling comfort that the user wore the earphone, reduce the volume of earphone.

Description

Speaker module and earphone

Technical Field

The application relates to the technical field of electronic products, in particular to a loudspeaker module and an earphone.

Background

In the use process of electronic products, in order to enable users to listen to sound information provided by the electronic products without disturbing other people, headphones have become an essential accessory of the electronic products.

In the related art, the structural layout of the internal speaker of the earphone is unreasonable, resulting in poor sound effect of the earphone, which needs to be further improved.

Disclosure of Invention

The embodiment of the application provides a speaker module and earphone, and play sound effect is better.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, a speaker module provided according to some embodiments of the present application is used for an earphone, where the earphone includes: a housing. The speaker module includes a first speaker unit and a second speaker unit. The first loudspeaker unit comprises a first vibrating diaphragm group, the outer surface of the first vibrating diaphragm group faces to the first side, the second loudspeaker unit is positioned on one circumferential side of the first loudspeaker unit, the second loudspeaker unit sounds towards the first side, and the sound production frequency of the second loudspeaker unit is larger than that of the first loudspeaker unit.

According to the earphone of the embodiment of the application, the sounding frequency of the second speaker unit is larger than that of the first speaker unit by arranging the first speaker unit and the second speaker unit. Therefore, the sounding frequency difference of the first loudspeaker unit and the second loudspeaker unit is favorably utilized, so that the earphone has better sound expressive force on the sound ranges of different frequencies, and the sound output effect of the loudspeaker module is improved. And by having the second speaker unit located at one side in the circumferential direction of the first speaker unit. Meanwhile, the sounding directions of the first speaker unit and the second speaker unit are the same. Therefore, the second loudspeaker unit can be prevented from blocking the sound of the first loudspeaker unit, and meanwhile, the interference of the sound vibration of the first loudspeaker unit to the second loudspeaker unit can be avoided, so that the overall sound effect of the earphone is improved. Simultaneously, can also be favorable to improving the travelling comfort that the user wore the earphone, reduce the volume of earphone.

According to some optional embodiments of the present application, the outer peripheral surface of the first speaker unit includes a first contour surface and a second contour surface, and the first contour surface and the second contour surface are arranged and connected along a circumferential direction of the first speaker unit. The inner peripheral surface of the shell comprises a first inner peripheral surface area and a second inner peripheral surface area, and the first inner peripheral surface area and the second inner peripheral surface area are arranged and connected along the circumferential direction of the shell; the first contour surface is opposite to and spaced apart from the first inner peripheral surface region, the second contour surface is matched with the second inner peripheral surface region, and the second speaker unit is located between the first contour surface and the first inner peripheral surface region. The arrangement of the first contour surface and the first inner peripheral surface area are spaced, so that the first contour surface can be utilized to avoid the second speaker unit, and an avoidance space is provided for the arrangement of the second speaker unit, so that the arrangement of the second speaker unit is facilitated; on the other hand, the second contour surface is matched with the second inner peripheral surface area, so that the second contour surface is attached to the second inner peripheral surface area, the whole volume of the first loudspeaker unit is set larger on the basis that the first loudspeaker unit provides avoidance space for the second loudspeaker unit, the effective vibration area of the vibrating diaphragm group of the first loudspeaker unit is ensured, and the sound emitting effect of the first loudspeaker unit is improved.

According to some alternative embodiments of the present application, the second inner peripheral surface region is a curved surface extending in a circumferential direction of the housing, and the second contour surface is a curved surface extending in a circumferential direction of the housing. The setting like this, when guaranteeing that the overall shape of shell carries out the adaptation with human ear, be favorable to increasing the volume of the accommodation space in the shell to integrate more functional device in the earphone.

According to some alternative embodiments of the present application, the second inner peripheral surface region and the second contour surface are each arcuate surfaces extending in a circumferential direction of the housing and arching away from the first contour surface. The setting like this, when guaranteeing that the overall shape of shell carries out the adaptation with human ear, be favorable to increasing the volume of the accommodation space in the shell to integrate more functional device in the earphone.

According to some alternative embodiments of the present application, the first contoured surface is planar; alternatively, the first contour surface is an arcuate surface that arches toward the first inner peripheral surface region. Thereby facilitating avoidance of the second speaker unit.

According to some optional embodiments of the present application, the first speaker unit includes a first frame, the first diaphragm group is supported on the first frame and is disposed with a first frame concentric axis, a peripheral wall of the first frame includes a first portion and a second portion, the first portion and the second portion are arranged and connected along a circumference of the first frame, a surface of the first portion facing away from the second portion forms the first contour surface, and a surface of the second portion facing away from the first portion forms the second contour surface. From this, through making the perisporium of first basin frame include first part and second part, deviate from through the first part the surface of second part forms first profile, the second part deviate from the surface of first part forms the second profile to can utilize first basin frame to act as the casing of first speaker unit, need not to set up the casing in addition, and can arrange the front chamber and the rear chamber of first speaker unit on the shell of earphone, be favorable to increasing the volume of first speaker unit, thereby increase the effective vibrating area of first vibrating diaphragm group, guarantee the play sound effect of first speaker unit.

According to some optional embodiments of the present application, the first diaphragm group has a first fold ring, the first fold ring includes a first segment and a second segment, the first segment and the second segment are arranged and connected in a circumferential direction of the first frame, an extension path of the first segment along the circumferential direction of the first frame is the same as an extension path of the first portion along the circumferential direction of the first frame, an extension path of the second segment along the circumferential direction of the first frame is the same as an extension path of the second portion along the circumferential direction of the first frame, and the first segment is located between the first portion and the second segment, and the second segment is located between the first segment and the second portion. The setting like this can make the shape looks adaptation of the week wall of first vibrating diaphragm group and first basin frame to be favorable to improving the connection reliability of first vibrating diaphragm group and first basin frame, and be favorable to setting up the size of first vibrating diaphragm group bigger, guarantee the effective vibrating area of first vibrating diaphragm group, and then improve the play sound effect of first speaker unit.

According to some alternative embodiments of the present application, the first diaphragm group is symmetrically disposed. When the first voice coil drives the first vibrating diaphragm group to vibrate, the driving forces born by the first vibrating diaphragm group on two sides of the symmetrical plane are the same, so that rolling vibration of the first vibrating diaphragm group in the direction perpendicular to the symmetrical plane can be avoided.

According to some alternative embodiments of the present application, the first section and the second section are equally wide. Thus, piston type vibration of the first vibrating diaphragm group is facilitated, and the rolling vibration problem of the first vibrating diaphragm group is avoided at least to a certain extent.

According to some alternative embodiments of the present application, the first diaphragm group is an integral piece. The arrangement is beneficial to improving the structural strength of the first vibrating diaphragm group and is convenient for processing and manufacturing the first vibrating diaphragm group.

According to some optional embodiments of the present application, the inner peripheral surface of the first basin frame is provided with an annular groove recessed toward a direction away from the central axis of the first basin frame, the annular groove extends along the circumferential direction of the first basin frame, and the annular groove penetrates to the end surface of the open end of the first basin frame, and the outer edge of the first vibrating diaphragm group is accommodated in the annular groove and fixed on the bottom surface of the annular groove. Like this, be favorable to utilizing annular groove to carry out effective support to first vibrating diaphragm group, annular groove's setting simultaneously can increase the volume of first basin frame inner space, is favorable to setting up the size of first vibrating diaphragm group bigger, and then is favorable to increasing the effective vibrating area of first vibrating diaphragm group, improves the play sound effect of speaker.

According to some alternative embodiments of the present application, the first speaker unit includes a first voice coil connected to an inner surface of the first diaphragm set; the first voice coil comprises a first voice coil part and a second voice coil part which are arranged and connected in the circumferential direction of the first basin frame, the extension path of the first voice coil part along the circumferential direction of the first basin frame is identical to the extension path of the first part along the circumferential direction of the first basin frame, the first voice coil part is positioned between the first part and the second voice coil part, the extension path of the second voice coil part along the circumferential direction of the first basin frame is identical to the extension path of the second part along the circumferential direction of the first basin frame, and the second voice coil part is positioned between the second part and the first voice coil part. The arrangement is that when the first voice coil drives the first vibrating diaphragm group to vibrate, the uniformity of the driving force of the first voice coil on the first vibrating diaphragm group in the circumferential direction can be improved at least to a certain extent, and the problem that the first vibrating diaphragm group generates polarization or rolling vibration due to the fact that the shape of the first voice coil is not matched with that of the first vibrating diaphragm group is avoided at least to a certain extent.

According to some optional embodiments of the present application, the first speaker unit includes a first magnetic circuit system fixed to the first frame, the first magnetic circuit system having an annular magnetic gap; the magnetic gap comprises a first gap part and a second gap part, the first gap part and the second gap part are distributed and communicated in the circumferential direction of the first basin frame, the first gap part is matched with the first voice coil part, and the second gap part is matched with the second voice coil part. The arrangement can enable the whole magnetic gap to be matched with the shape of the first voice coil, and is favorable for guaranteeing the reliability of the fit between the first voice coil and the first magnetic circuit system, so that the uniformity of the driving force of the first vibrating diaphragm group in the circumferential direction of the first basin frame is guaranteed when the first voice coil is matched with the first magnetic circuit system to drive the first vibrating diaphragm group to vibrate, and the problem that the first vibrating diaphragm group generates rolling vibration is avoided. In addition, because the first voice coil loudspeaker voice coil links to each other with the one side of deviating from the sound hole of first vibrating diaphragm group to the one end of keeping away from first vibrating diaphragm group of first voice coil loudspeaker voice coil and the magnetic clearance fit of first magnetic circuit system. Like this, compare and link to each other with the one side of orientation sound hole of first ball top and the one end of keeping away from first vibrating diaphragm group of first voice coil loudspeaker voice coil and the scheme of the magnetic clearance fit of first magnetic circuit system for the surface of orientation sound hole of first vibrating diaphragm group is not sheltered from by first magnetic circuit system and first voice coil, is favorable to guaranteeing the play sound area of first vibrating diaphragm group, further improves the play sound effect of first speaker unit.

According to some alternative embodiments of the present application, the first magnetic circuit system comprises a side magnetic part and a first center magnetic part; the side magnetic part is annular and comprises a first sub-part and a second sub-part, the first sub-part and the second sub-part are arranged and connected in the circumferential direction of the first basin frame, the extending path of the first sub-part in the circumferential direction of the first basin frame is identical to the extending path of the first part in the circumferential direction of the first basin frame, and the extending path of the second sub-part in the circumferential direction of the first basin frame is identical to the extending path of the second part in the circumferential direction of the first basin frame; the first central magnetic part is surrounded by the side magnetic part, the first central magnetic part and the side magnetic part define a magnetic gap, the outer peripheral surface of the first central magnetic part comprises a first surface and a second surface, the first surface and the second surface are distributed and connected in the circumferential direction of the first basin frame, the first surface is opposite to and spaced from the first sub-part to define a first gap part, and the second surface is opposite to and spaced from the second sub-part to define a second gap part.

According to some alternative embodiments of the present application, both the side magnetic portion and the first central magnetic portion may be magnets. Thus, the magnetic circuit strength of the first magnetic circuit system can be improved.

According to some optional embodiments of the present application, the first magnetic circuit system further includes a second central magnetic portion, and the second central magnetic portion seals an end of the edge magnetic portion away from the first diaphragm set to support the first central magnetic portion.

According to some alternative embodiments of the present application, the second central magnetic portion and the side magnetic portion may be an integral piece. Thus, the connection strength of the second central magnetic part and the side magnetic part is high, and the reliable support of the second central magnetic part to the first central magnetic part is facilitated.

According to some alternative embodiments of the present application, the second central magnetic portion may be a piece of magnetically permeable material. Therefore, the second central magnetic part can be used for restraining the leakage of the magnetic force line, and the magnetic induction intensity of the first magnetic circuit system is increased.

According to some alternative embodiments of the present application, the first magnetic circuit system further includes a magnetic conductive yoke disposed on a side of the first central magnetic portion facing the first diaphragm set. Therefore, the magnetic force line leakage is restrained by the first magnetic circuit system, and the driving strength of the first vibrating diaphragm group is improved.

According to some alternative embodiments of the present application, the outer peripheral surface of the magnetic yoke is flush with the outer peripheral surface of the first central magnetic portion in the axial direction of the first magnetic circuit system. Therefore, the constraint effect of the magnetic yoke on magnetic lines of force is improved, the magnetic induction intensity of the first magnetic circuit system is increased, the magnetic gap cannot be influenced by the magnetic yoke, and the suitability of the first magnetic circuit system and the first voice coil is improved.

According to some alternative embodiments of the present application, the width of the first gap portion is smaller than the width of the second gap portion. Thereby be favorable to increasing the driving force that first vibrating diaphragm group is close to first partial one side and receive, improve the homogeneity of the driving force that first vibrating diaphragm group receives in the circumference of first basin frame, avoid first vibrating diaphragm group to produce the problem of rolling and vibrating.

According to some optional embodiments of the present application, a surface of the second speaker unit facing away from the first speaker unit is adapted to the first inner peripheral surface area. The arrangement is beneficial to fully utilizing the space of the shell, realizing the compactness of the structure, and facilitating the cooperation of the second speaker unit and the first speaker unit to separate the front cavity and the rear cavity of the first speaker unit.

According to some optional embodiments of the present application, the outer periphery of the first speaker unit has an oval shape, and the second speaker unit is located at one end in the length direction of the short axis of the first speaker unit.

According to some alternative embodiments of the present application, the first speaker unit is a moving coil woofer.

According to some alternative embodiments of the present application, the second speaker unit is a moving iron tweeter, or a planar voice coil tweeter.

According to some optional embodiments of the present application, the second speaker unit comprises: the device comprises a protective shell, a second vibrating diaphragm group, a reed, a transmission rod, a second magnetic circuit system and a second voice coil. The second vibrating diaphragm group is arranged in the protective shell. The second vibrating diaphragm group is parallel to the axial direction of the first loudspeaker unit so as to divide the space in the protective shell into a front cavity and a rear cavity, and one side of the protective shell adjacent to the sound outlet is provided with a sound outlet channel communicated with the front cavity. The reed, the transmission rod and the second magnetic circuit system are all arranged in the rear cavity, the second magnetic circuit system and the second voice coil are coaxially arranged, the axial direction of the second magnetic circuit system is the same as that of the first loudspeaker unit, the second magnetic circuit system is matched with the second voice coil to drive the reed to vibrate, and the transmission rod is connected with the reed and the second vibrating diaphragm group. Therefore, the structure is simple and the volume is small.

In some optional embodiments of the present application, the front and rear chambers of the second speaker unit are arranged in a radial direction of the first speaker unit, and the front chamber is located at a side of the rear chamber remote from the first speaker unit. This arrangement is advantageous in reducing the sound emission interference between the first speaker unit and the second speaker unit.

In some alternative embodiments of the present application, the reed comprises a first blade, a second blade, and a connecting blade. The first sheet body and the second sheet body are arranged in parallel with the second vibrating diaphragm group, the second sheet body is positioned on one side of the first sheet body far away from the second vibrating diaphragm group, one end of the second sheet body is provided with a supporting body exceeding the edge of the first sheet body, the connecting sheet body is connected between one end of the second sheet body far away from the supporting body and one end of the first sheet body far away from the supporting body, and the supporting sheet body is connected with the transmission rod; the second magnetic circuit system comprises a magnetic conduction part and two magnet parts, the magnetic conduction part is annular, the axial direction of the magnetic conduction part is the same as the axial direction of the first loudspeaker unit, and the first sheet body is supported on one side surface of the magnetic conduction part, which is adjacent to the second vibrating diaphragm group. The two magnet portions are arranged in the magnetic conduction portion and are oppositely arranged in the radial direction of the magnetic conduction portion, the second sheet body penetrates through the axial direction end of the magnetic conduction portion to the axial direction other end of the magnetic conduction portion from one axial direction end of the magnetic conduction portion so that the supporting body is located on the outer side of the magnetic conduction portion, and the second sheet body is located between the two magnet portions.

In a second aspect, embodiments of the present application provide an earphone. The earphone includes: a housing and a speaker module in the above embodiments. The shell is provided with a sound outlet hole, the first loudspeaker unit is arranged in the shell, the outer surface of the first vibrating diaphragm group faces the sound outlet hole, the second loudspeaker unit is arranged in the shell, and the second loudspeaker unit faces the sound outlet hole to produce sound.

Because the earphone provided by the embodiment of the application comprises the loudspeaker module set according to any technical scheme, the two loudspeaker modules can solve the same technical problem and achieve the same technical effect.

Drawings

Fig. 1 is a schematic structural diagram of an earphone provided in some embodiments of the present application;

FIG. 2 is an exploded view of the headset of FIG. 1;

fig. 3 is a schematic diagram of a charging connection between the headset shown in fig. 1-2 and a wireless charging dock;

fig. 4 is a cross-sectional view of a portion of the structure of the earphone shown in fig. 1-2;

FIG. 5 is a cross-sectional view of an earphone provided by other embodiments of the present application;

fig. 6 is a schematic diagram of an earphone according to further embodiments of the present application;

fig. 7 is a schematic cross-sectional structure of the earphone shown in fig. 6;

fig. 8 is a schematic cross-sectional structure of the earphone shown in fig. 6;

Fig. 9a is a schematic structural view of a first speaker unit in the earphone shown in fig. 6-8;

fig. 9b is a schematic cross-sectional structure of an earphone according to other embodiments of the present disclosure;

fig. 10 is an exploded structural schematic view of the first speaker unit shown in fig. 9 a;

fig. 11 is a schematic view illustrating a structure of the first tub shown in fig. 10;

fig. 12 is a schematic view of another direction of the first speaker unit shown in fig. 9 a;

fig. 13 is a schematic cross-sectional structure of the first speaker unit shown in fig. 12 at a C-C line;

fig. 14 is an enlarged view of a circled portion at D of the first speaker unit shown in fig. 13;

FIG. 15a is a schematic diagram of the first diaphragm set shown in FIG. 10;

FIG. 15b is a schematic diagram illustrating the assembly of the first diaphragm assembly shown in FIG. 10 and the first frame;

FIG. 16 is a schematic view of another direction of the first diaphragm set shown in FIG. 15 a;

FIG. 17a is a schematic view of the structure of the first voice coil shown in FIG. 10;

FIG. 17b is a schematic diagram illustrating the cooperation of the first voice coil, the first frame and the first magnetic circuit system shown in FIG. 10;

fig. 18 is a schematic structural view of the first magnetic circuit system shown in fig. 10;

FIG. 19 is a schematic diagram showing the configuration of the side magnetic portion and the second center magnetic portion of the first magnetic circuit system shown in FIG. 18;

FIG. 20 is a schematic diagram illustrating the cooperation of the first central magnetic portion and the magnetically permeable yoke of the first magnetic circuit shown in FIG. 18;

fig. 21 is a schematic structural view of a second speaker unit in the earphone shown in fig. 6;

fig. 22 is a schematic sectional structure view of the second speaker unit shown in fig. 21 at line E-E;

fig. 23 is a schematic view of a part of the structure of an earphone according to still other embodiments of the present application;

fig. 24 is a schematic structural view of a second diaphragm set of the second speaker unit shown in fig. 21;

fig. 25 is a schematic structural view of a reed of the second speaker unit shown in fig. 21;

fig. 26 is a schematic structural diagram of the second magnetic circuit system of the second speaker unit shown in fig. 21.

Reference numerals:

100. an earphone;

1. a housing; 10. an accommodating space; 10a, a first inner peripheral surface region; 10b, a second inner peripheral surface region; 101. a first accommodation chamber; 11. a front shell; 110. a sound outlet hole; 111. a main body portion; 12. an extension; 1121. limiting convex ribs; 12. a rear case; 102. a second accommodation chamber; 121. a cover body; 122. a rod body; 13. a contact sleeve;

2. a main board;

3. a battery;

4. a speaker; 42. a kernel; 421. a vibrating diaphragm; 422. a voice coil; 423. a magnetic circuit system; 424. a basin stand;

4a, a first speaker unit; 4aa, a first profile; 4ab, a second contour surface; 4a21, a first diaphragm group; 4a211, a first connection portion; 4a2111, a first connection section; 4a2112, a second connection section; 4a212, a first collar; 4a2121, first paragraph; 4a2122, second section; 4a213, first dome; 4a22, a first voice coil; 4a221, a first voice coil portion; 4a222, a second voice coil section; 4a23, a first magnetic circuit system; 4a23a, magnetic gap; 4a23a1, a first gap portion; 4a23a2, a second gap portion; 4a231, a side magnetic part; 4a231a, a first subsection; 4a231b, a second subsection; 4a232, a first central magnetic portion; 4a232a, a first face; 4a232b, a second face; 4a233, a second central magnetic portion; 4a234, a magnetic yoke; 4a24, a first basin stand; 4a241, a peripheral wall; 4a2411, a first portion; 4a2412, a second part; 4a2413, an annular groove; 4a242, a bottom wall; 4a243, annular flange; 4a24a, mounting through holes;

4b, a second speaker unit; 4b1, a protective shell; 4b1a, a first shell portion; 4b1b, a second shell portion; 4b11, a second sound outlet hole; 4b21, a second diaphragm group; 4b21a, a second connection portion; 4b21b, a second collar; 4b21c, a second dome; 4b22, reed; 4b221, first sheet; 4b222, a second sheet; 4b223, connecting piece; 4b224, a support; 4b23, a transmission rod; 4b24, a second magnetic circuit system; 4b241, a magnetic conductive portion; 4b242, a magnet portion; 4b25, a second voice coil;

5. A wireless charging module; 51. the power receiving coil; 52. an AC/DC conversion module; 53. a charge control module; 6. wireless communication module

200. A wireless charging base; 201. a charging coil; 202. an DC-AC conversion module; 203. a power interface;

Detailed Description

In the present embodiments, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and for example, "connected" may be either detachably connected or non-detachably connected; may be directly connected or indirectly connected through an intermediate medium. References to directional terms in the embodiments of the present application, such as "front", "rear", "inner", "outer", etc., are merely with reference to the directions of the drawings, and thus, the directional terms used are used for better, more clear description and understanding of the embodiments of the present application, rather than indicating or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present application. "plurality" means two or more.

In the present embodiments, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the embodiments of the present application, the terms of positional relationship such as "parallel", "perpendicular", "identical in direction", "coaxial", "parallel", etc. used to describe the respective components all represent approximate orientations that allow for some error.

The application provides an earphone 100, which can be used with electronic products such as a mobile phone, a tablet computer, a notebook computer and the like to receive sound information provided by the electronic products and output the sound information to a user. Through the cooperation of the earphone 100 and the electronic product, the sound of the electronic product can be prevented from being emitted to interfere with other people. The earphone can be a wireless earphone or a wired earphone.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an earphone 100 according to some embodiments of the present application; fig. 2 is an exploded view of the earphone 100 of fig. 1. The earphone 100 shown in fig. 1 and 2 is described by taking a wireless earphone as an example. In this embodiment, the earphone 100 may include a housing 1, a main board 2, a battery 3, a wireless charging module 5, a wireless communication module 6, and a speaker 4.

It will be appreciated that fig. 1, 2 and the related figures below only schematically illustrate some of the components comprised by the earphone 100, the actual shape, actual size, actual position and actual configuration of which are not limited by fig. 1, 2 and the figures below. In addition, when the headset 100 is a wired headset, the wired headset may not include a battery, a wireless communication module, and a wireless charging module.

The housing 1 may serve as a carrier for the functional components of the earphone 100 for protecting the functional components located in the receiving space 10 of the housing 1. When the user wears the earphone 100, the earphone 100 is brought into contact with the user's ear through the housing 1. Therefore, in order to improve the comfort of the user wearing the earphone 100, the housing 1 may be adapted in shape to the shape of the human ear.

Since the housing 1 is directly exposed to the external environment, it is in contact with the user's human ear. Or the earphone 100 is in contact with other external structures through the housing 1. This inevitably causes problems such as scratching, corrosion, etc. of the outer surface of the housing 1. In order to avoid the technical problem, the shell 1 can have certain performances of wear resistance, corrosion resistance, scratch resistance and the like, or a layer of functional material for wear resistance, corrosion resistance and scratch resistance is coated on the outer surface of the shell 1.

The inner peripheral surface of the casing 1 is a curved surface extending in the circumferential direction of the casing 1. In some examples, the inner peripheral surface of the housing 1 is an arcuate surface extending in the circumferential direction of the housing 1. Also exemplified is that the inner peripheral surface of the housing 1 is an elliptical arc surface extending in the circumferential direction of the housing 1. In other examples, the inner peripheral surface of the housing 1 may be a combination of an arc surface and an elliptical arc surface, as long as the inner peripheral surface of the housing 1 is ensured to be a curved surface. The arrangement is beneficial to increasing the volume of the accommodating space 10 in the shell 1 while ensuring the overall shape of the shell 1 to be matched with the ears of a human body so as to integrate more functional devices in the earphone 100.

In some embodiments, the housing 1 may be formed as a single piece, that is, the housing 1 may be formed as an integral piece, and the integral housing 1 may have a higher structural strength.

In other embodiments, the housing 1 may also be formed from a plurality of partial assemblies. With continued reference to fig. 1 and 2, in this embodiment, the housing 1 may include a front shell 11 and a rear shell 12. Wherein the front housing 11 faces the human ear when the earphone 100 is in use, and the rear housing 12 faces away from the human ear when the earphone 100 is in use. The shell 1 is formed by assembling the front shell 11 and the rear shell 12, so that the front shell 11 and the rear shell 12 can be conveniently and respectively processed, and the die structures of the front shell 11 and the rear shell 12 are facilitated to be simplified, so that the molding difficulty of the front shell 11 and the rear shell 12 is reduced, and the processing and manufacturing difficulty of the shell 1 is further reduced. Specifically, the front case 11 may be fixedly connected to the rear case 12 by a snap-fit manner. The front case 11 may also be connected to the rear case 12 by screws. Alternatively, in other embodiments, the front case 11 may be fixedly connected to the rear case 12 by glue or tape.

The material of the front shell 11 includes, but is not limited to, hard plastic, metal, and a combination of plastic and metal. In order to achieve light weight of the earphone 100, the front case 11 may be made of hard plastic.

Referring to fig. 2, a first receiving chamber 101 is formed in the front case 11, and one side of the first receiving chamber 101 adjacent to the rear case 12 is opened. The front case 11 is formed with a sound outlet hole 110 communicating with the first receiving chamber 101, and sound of the earphone 100 can be conducted to the outside of the earphone 100 through the sound outlet hole 110.

Specifically, the front case 11 may include a main body portion 111 and an extension portion 112. The extension 112 may be located at one side of the body 111 and extend in a direction away from the body 111. Referring to fig. 2, the main body 111 may have the first accommodating cavity 101 formed therein, and the extension 112 may have the sound outlet 110 formed therein. It will be appreciated that in other embodiments, the front housing 11 may not include the extension 112, but may be directly provided with the sound hole 110 on the wall surface of the main body 111.

In order to increase the comfort of the user wearing the headset 100, the headset 100 may also be provided with a contact sleeve 13, which contact sleeve 13 may be used for contacting the user's ear. For example, the contact sleeve 13 may be disposed around the outer peripheral surface of the extension 112, and the contact sleeve 13 may be similar in shape to the human auditory canal to improve the fit of wearing the earphone 100. Meanwhile, the contact sleeve 13 may be made of a flexible material such as silicone rubber or rubber to improve the comfort of the user wearing the earphone 100.

Referring to fig. 2, a limiting rib 1121 may be formed on an outer peripheral surface of the extension portion 112, so that when the contact sleeve 13 is disposed around the outer peripheral surface of the extension portion 112, the limiting rib 1121 can abut against the contact sleeve 13, thereby playing a role in limiting the contact sleeve 13, and reducing the probability of the contact sleeve 13 falling off from the extension portion 112 naturally. Of course, the earphone 100 may not include the contact sleeve 13 in order to reduce the cost.

The material of the rear case 12 may be the same as that of the front case 11 described above. Of course, the material of the rear case 12 may be different from that of the front case 11. In order to achieve light weight of the earphone 100, the rear housing 12 may be made of hard plastic.

With continued reference to fig. 2, the rear housing 12 may include a cover 121 and a stem 122. The cover 121 may be connected to the front case 11, and the rod 122 may be disposed at a side of the cover 121 remote from the front case 11. The cover 121 may have a second receiving chamber 102 formed therein, and a side of the second receiving chamber 102 adjacent to the front case 11 is opened such that the second receiving chamber 102 may communicate with the first receiving chamber 101, and the second receiving chamber 102 and the first receiving chamber 101 may together constitute the receiving space 10 of the housing 1.

The cover 121 and the rod 122 may be integrally formed, that is, the cover 121 and the rod 122 are integrally formed. This simplifies the manufacturing process of the rear case 12 and improves the strength of the connection between the cover 121 and the rod 122. Of course, the present application is not limited thereto, and the cover 121 and the rod 122 may be assembled, and the cover 121 and the rod 122 may be connected by gluing, clamping, screwing, welding, or the like.

The main board 2 may be accommodated in the accommodating space 10. Specifically, the main board 2 may be mounted in the second receiving chamber 102. The mounting of the main board 2 in the housing 1 includes, but is not limited to, clamping, screwing or gluing.

The motherboard 2 is used for an integrated control chip or the like, and the control chip may be, for example, an application processor (application processor, AP), a double data rate synchronous dynamic random access memory (DDR), a universal memory (universal flash storage, UFS), or the like. The main board 2 is electrically connected with the wireless communication module 6, the wireless charging module 5, the battery 3, the loudspeaker 4 and other functional devices, so as to realize the operations of signal control, data signal processing and the like among different functional devices.

The main board 2 may be a hard circuit board, a flexible circuit board, or a combination of a hard circuit board and a soft circuit board. The main board 2 may be an FR-dielectric board, a Rogers dielectric board, a hybrid dielectric board of FR-and Rogers, or the like. Here, FR-is a designation for a class of flame-resistant materials, and Rogers dielectric board is a high frequency board.

The wireless communication module 6 may be integrated on the motherboard 2. The wireless communication module 6 may be welded to the motherboard 2, for example. Alternatively, the wireless communication module 6 may be a bluetooth, infrared or wifi module. The earphone 100 can perform wireless signal interaction with the electronic product through the wireless communication module 6 so as to receive the sound information of the electronic product.

The battery 3 is used to supply power to functional devices such as the main board 2, the wireless communication module 6, the speaker 4, etc. within the earphone 100. The battery 3 may include, but is not limited to, a nickel cadmium battery 3, a nickel hydrogen battery 3, a lithium battery 3, or other types of batteries. In addition, the number of the batteries 3 in the embodiment of the present application may be plural or one.

The shape of the battery 3 includes, but is not limited to, a rectangular parallelepiped, a cylinder, a circular truncated cone, or the like. In some examples, the battery 3 may be located within the second receiving cavity 102, and the battery 3 is located on a side of the main board 2 adjacent to the first receiving cavity 101. In other examples, the battery 3 may also be located on the side of the main board 2 facing away from the first accommodation chamber 101. The mounting of the battery 3 in the housing 1 includes, but is not limited to, clamping, screwing or gluing.

The wireless charging module 5 may wirelessly charge the battery 3 of the earphone 100. The wireless charging module 5 may be integrated on the motherboard 2. Specifically, referring to fig. 3, fig. 3 is a schematic diagram illustrating a charging connection between the earphone 100 and the wireless charging base 200 shown in fig. 1-2. In this embodiment, the wireless charging module 5 includes: a power receiving coil 51, an ac/dc conversion section 52, and a charge control section 53. The power receiving coil 51, the ac/dc conversion section 52, and the charge control section 53 are all electrically connected to the main board 2.

The power receiving coil 51 may receive a wireless charging input of the wireless charging cradle 200 of the headset 100. Of course, the present application is not limited thereto, and the power receiving coil 51 may also receive wireless charging inputs of other terminals supporting wireless charging. The power receiving coil 51 is a receiving (Rx) coil. The ac/dc conversion part 52 may be an Rx chip.

Wireless charging dock 200 includes a power interface 203, a charging coil 201, and an dc-to-ac conversion component 202. The charging coil 201 may be a transmitting (Tx) coil. The dc-ac conversion part 202 may be a Tx chip.

In the embodiment of the present application, the wireless charging base 200 is used as a transmitting end of a wireless charging signal, the earphone 100 is used as a receiving end of the wireless charging signal, and the wireless charging base 200 charges the earphone 100 wirelessly. Specifically, the dc-ac conversion section 202 of the wireless charging dock 200 may receive a dc electrical signal input from the power interface 203. The dc-ac conversion section 202 may convert the dc signal into an ac signal and then input the ac signal to the charging coil 201. The charging coil 201 may generate an alternating electromagnetic field in response to the alternating current signal.

The power receiving coil 51 of the earphone 100 is coupled with the charging coil 201. The power receiving coil 51 (i.e., rx coil) induces an alternating electromagnetic field emitted from the charging coil 201 (i.e., tx coil), and may generate an alternating current signal and input the alternating current signal to the alternating current-to-direct current conversion part 52. The ac/dc conversion section 52 may rectify the ac signal into a dc signal and input the dc signal to the charge control section 53. The charge control section 53 can charge the battery 3 based on the direct current signal.

Of course, the present application is not limited thereto, and in other examples, headset 100 may also support wired charging. Specifically, a charging interface is disposed on the housing 1, and is electrically connected to the motherboard 2, and the charging interface may be connected to a wired charger (also referred to as a power adapter) to receive a charging input of the wired charger for the battery 3. For example, the charging interface may be a universal serial bus (universal serial bus, USB) interface.

The speaker 4 may be installed in the accommodating space 10, and the speaker 4 is located at a side of the battery 2 near the sound outlet hole 110. Specifically, the speaker 4 may be installed in the first receiving chamber 101. The assembly between the speaker 4 and the housing 1 includes, but is not limited to, a snap fit, a threaded connection, or an adhesive. The speaker 4 is electrically connected with the main board 2 to acquire audio electric signals such as music, voice, etc., and the speaker 4 can convert the audio electric signals into sound signals to support audio playback.

Referring to fig. 4, fig. 4 is a cross-sectional view of a portion of the structure of the earphone 100 shown in fig. 1-2. In the present embodiment, the speaker 4 is a core 42. The inner core 42 comprises a diaphragm group 421, a voice coil 422 fixedly connected with the diaphragm group 421, a magnetic circuit system 423 arranged on one side of the diaphragm group 421, and a basin frame 424 for installing the diaphragm group 421 and the magnetic circuit system 423.

The speaker 4 is fixed in the housing 1 by means of a frame 424, the assembly between the frame 424 and the housing 1 including but not limited to a snap fit, a threaded connection or an adhesive etc. Also, the speaker 4 may divide the housing 1 into a front chamber C1 and a rear chamber C2 by the diaphragm group 421. Voice coil 422, magnetic circuit 423 and bobbin 424 are located within rear cavity C2. The sound outlet hole 110 communicates with the front cavity C1. The voice coil 422 generates an induced magnetic field after being electrified, and is displaced under the action of the magnetic force of the magnetic circuit system 423 to drive the vibrating diaphragm group 421 to vibrate, so that air in the front cavity C1 is pushed to vibrate to form sound waves, and the sound waves are output by the sound outlet 110.

Of course, the present application is not limited thereto, and in other examples, the speaker 4 may also include a housing. The loudspeaker 4 is fixed in the housing 1 by means of a shell. The core 42 may be secured to the inner wall of the housing by a basin frame 424. The speaker 4 may divide the housing into a front chamber and a rear chamber by the diaphragm group 421, and the front chamber of the housing communicates with the sound outlet hole 110.

In the above embodiment, the speaker 4 employed in the earphone 100 is a moving coil type bass speaker, and the speaker 4 is one. This, while enabling the earphone 100 to have a low frequency range representation, makes the earphone 100 inexpensive to manufacture. However, the moving-coil type woofer has large vibration mass and poor transient characteristics, and the mass distribution, the compliance of the membrane and the asymmetric distribution of the BL electromagnetic driving force can generate different degrees of swinging vibration and different frequencies of dividing vibration, so that serious peaks and valleys are generated in high-frequency response, high-frequency range performance cannot be realized, and the earphone 100 has poor audio playing performance and poor sound effect.

In order to solve the technical problem, please refer to fig. 5, fig. 5 is a cross-sectional view of an earphone 100 according to other embodiments of the present application. In this embodiment, one speaker is not provided in the earphone 100 any more, but a plurality of different speakers are integrated in the earphone 100. Specifically, the earphone 100 may include a speaker module including a first speaker unit 4a and a second speaker unit 4b.

The first speaker unit 4a and the second speaker unit 4b may be disposed at the housing 1 such that the outer surface of the diaphragm group of the first speaker unit 4a faces the sound outlet 110, so that the first speaker unit 4a may sound toward the sound outlet 110. At the same time, the second speaker unit 4b also emits sound toward the sound emitting hole 110, whereby the sound emitting directions of the first speaker unit 4a and the second speaker unit 4b are the same. And the sound emission frequency of the second speaker unit 4b is larger than that of the first speaker unit 4 a. Therefore, by making the earphone 100 include the first speaker unit 4a and the second speaker unit 4b, it is beneficial to utilize the difference of sound production frequencies of the first speaker unit 4a and the second speaker unit 4b, so that the earphone 100 has better sound expressive force on the sound ranges of different frequencies, and the sound output effect of the speaker module is improved.

It should be noted that, the "outer surface" of the diaphragm set of the first speaker unit 4a refers to a surface of the diaphragm set of the first speaker unit 4a facing away from the interior of the first speaker unit 4a, and an opposite surface of the diaphragm set is referred to as an "inner surface".

Specifically, in this embodiment, the first speaker unit 4a may be used as a woofer, and the first speaker unit 4a may be the same in structure as the speaker 4 described above. The first speaker unit 4a may be a moving coil woofer, for example. The second speaker unit 4b may be a tweeter. The second speaker unit 4b may be a moving iron tweeter, or a planar voice coil tweeter, for example.

In the embodiment of the present application, the first speaker unit 4a is used as a woofer, and the second speaker unit 4b is used as a tweeter, so that the earphone 100 can give consideration to expressive force on the low-frequency range and the high-frequency range, and the sound output effect of the speaker module can be improved.

With continued reference to fig. 5, the second speaker unit 4b and the first speaker unit 4a are arranged and spaced apart in the sound outlet direction of the sound outlet hole 110. Specifically, the first speaker unit 4a is located in the main body portion 111, and the second speaker unit 4b is located in the extension portion 112. In this embodiment, in order to facilitate placement of the second speaker unit 4b, the size of the extension 112 needs to be designed to be large. However, since the extension 112 is to be fitted with the human ear when the earphone 100 is worn, an excessively large extension 112 causes the overall size of the earphone 100 housing 1 to become large and also tends to bring uncomfortable wearing experience to the user. In addition, the second speaker unit 4b occupies the space of the extension 112, which may cause the sound emission of the first speaker unit 4a to be blocked, and affect the sound emission effect of the first speaker unit 4 a. And since the transmission of sound is achieved by the vibration of air, the sound-emitting vibration of the first speaker unit 4a tends to interfere with the vibration of the diaphragm group in the second speaker unit 4b, thereby affecting the sound-emitting of the second speaker unit 4 b. Resulting in a deterioration of the overall sound output effect of the earphone 100.

Although the problem of the large size of the extension 112 caused by the second speaker unit 4b being spaced apart from the first speaker unit 4a in the sound outlet direction of the sound outlet hole 110 can be solved by providing a groove for accommodating the second speaker unit 4b in the magnetic circuit of the first speaker unit 4 a. However, this arrangement still fails to solve the problem that the second speaker unit 4b blocks the sound of the first speaker unit 4a and the sound-emitting vibration of the first speaker unit 4a interferes with the vibration of the diaphragm group in the second speaker unit 4 b.

Therefore, in order to solve the above-mentioned problems, please refer to fig. 6, 7 and 8, fig. 6 is a schematic diagram of an earphone 100 according to still other embodiments of the present application; fig. 7 is a schematic cross-sectional structure of the earphone 100 shown in fig. 6; fig. 8 is a schematic cross-sectional structure of the earphone 100 shown in fig. 6. In this embodiment, the first speaker unit 4a and the second speaker unit 4b are arranged not in the sound outlet direction of the sound outlet hole 110 any more, but the first speaker unit 4a and the second speaker unit 4b are arranged side by side, and the second speaker unit 4b is located on one side in the circumferential direction of the first speaker unit 4 a.

In this way, the second speaker unit 4b can avoid blocking the sound of the first speaker unit 4a, and meanwhile, the interference of the sound-emitting vibration of the first speaker unit 4a to the second speaker unit 4b can be avoided, which is beneficial to improving the overall sound-emitting effect of the earphone 100. In addition, the problem that the experience of wearing the earphone 100 by the user is affected due to the large volume of the extension 112 caused by the first speaker unit 4a being arranged in the main body 111 and the second speaker unit 4b being arranged in the extension 112 can be avoided, which is beneficial to improving the comfort of wearing the earphone 100 by the user and reducing the volume of the earphone 100.

According to the earphone 100 of the embodiment of the present application, by providing the first speaker unit 4a and the second speaker unit 4b, the sound emission frequency of the second speaker unit 4b is larger than the sound emission frequency of the first speaker unit 4 a. In this way, the difference of the sound production frequencies of the first speaker unit 4a and the second speaker unit 4b is advantageously utilized, so that the earphone 100 has better sound expressive force on the sound ranges of different frequencies, and the sound production effect of the speaker 4 is improved. By positioning the second speaker unit 4b on one side in the circumferential direction of the first speaker unit 4a, the first speaker unit 4a and the second speaker unit 4b each sound toward the sound outlet hole 110. In this way, the second speaker unit 4b can avoid blocking the sound of the first speaker unit 4a, and meanwhile, the interference of the sound-emitting vibration of the first speaker unit 4a to the second speaker unit 4b can also be avoided, which is beneficial to improving the overall sound-emitting effect of the earphone 100. In addition, the comfort of wearing the earphone 100 by the user can be improved, and the volume of the earphone 100 can be reduced.

With continued reference to fig. 8, and in conjunction with fig. 9a, fig. 9a is a schematic structural diagram of the first speaker unit 4a in the earphone 100 shown in fig. 6-8. In this embodiment, the inner peripheral surface of the casing 1 includes a first inner peripheral surface region 10a and a second inner peripheral surface region 10b, and the first inner peripheral surface region 10a and the second inner peripheral surface region 10b are arranged and connected in the circumferential direction of the casing 1.

With continued reference to fig. 8 and 9a, the outer peripheral surface of the first speaker unit 4a includes a first contour surface 4aa and a second contour surface 4ab. The first contour surface 4aa and the second contour surface 4ab are arranged and connected in the circumferential direction of the first speaker unit 4 a.

The first contour surface 4aa is opposed to and spaced apart from the first inner peripheral surface region 10a, and the second speaker unit 4b is located between the first contour surface 4aa and the first inner peripheral surface region 10 a. The second contour surface 4ab is adapted to the second inner circumferential surface region 10 b.

By such arrangement, on the one hand, the first contour surface 4aa is spaced from the first inner peripheral surface region 10a, so that the first contour surface 4aa can be utilized to avoid the second speaker unit 4b, and an avoidance space is provided for the arrangement of the second speaker unit 4b, so that the arrangement of the second speaker unit 4b is facilitated; on the other hand, the second contour surface 4ab is adapted to the second inner peripheral surface area 10b, so that the fitting arrangement of the second contour surface 4ab and the second inner peripheral surface area 10b can be facilitated, and on the basis that the first speaker unit 4a provides the avoidance space for the second speaker unit 4b, the arrangement of the whole volume of the first speaker unit 4a is facilitated to be larger, the effective vibration area of the vibrating diaphragm group of the first speaker unit 4a is ensured, and the sound emitting effect of the first speaker unit 4a is improved.

The effective vibration area of the diaphragm set referred to herein refers to an area of the diaphragm set capable of pushing the air moving portion. The effective vibration area of the diaphragm group is related to the vibration frequency, and the smaller the effective vibration area of the diaphragm group is, the higher the vibration frequency is. Accordingly, the larger the effective vibration area of the diaphragm group, the lower the vibration frequency.

The second inner peripheral surface region 10b is a curved surface extending in the circumferential direction of the housing 1, and the second contour surface 4ab is a curved surface extending in the circumferential direction of the housing 1. Specifically, referring to fig. 8, the second inner peripheral surface region 10b is an arc surface, such as a superior arc surface, extending along the circumferential direction of the housing 1 and arching away from the first inner peripheral surface region 10a, and the second contour surface 4ab is an arc surface, such as a superior arc surface, extending along the circumferential direction of the housing 1 and arching away from the first contour surface 4 aa. Illustratively, the inner circumferential surface of the housing 1 is a cylindrical surface, and the second contour surface 4ab is an arc surface extending in the circumferential direction of the housing 1. It will be appreciated that the shape of the second contour surface 4ab may also be other shapes, as long as the adaptation of the second contour surface 4ab to the inner circumferential surface of the housing 1 is ensured.

In order to achieve a spacing of the first contour surface 4aa from the first inner circumferential surface region 10a, the space occupied by the first speaker unit 4a within the housing 1 is saved, ensuring that the second speaker unit 4b can be integrated while the first speaker unit 4a is arranged. Illustratively, the first profile surface 4aa is a planar surface. Also illustratively, the first contoured surface 4aa is an arcuate surface extending in the circumferential direction of the housing 1, and the first contoured surface 4aa arches toward the first inner peripheral surface area 10 b.

It is to be understood that the implementation of setting the position of the second speaker unit 4b in accordance with the shape of the outer peripheral surface of the first speaker unit 4a is not limited thereto. In other embodiments, referring to fig. 9b, fig. 9b is a schematic cross-sectional structure of an earphone 100 according to other embodiments of the present disclosure. The outer peripheral outline of the first speaker unit 4a may have an oval shape, and the second speaker unit 4b may be located at one end in the length direction of the short axis of the first speaker unit 4a of the oval shape. Specifically, the inner peripheral surface of the housing 1 is a cylindrical surface, the outer peripheral outline of the first speaker unit 4a may be elliptical, and the second speaker unit 4b may be located at one end in the length direction of the minor axis of the elliptical-shaped first speaker unit 4 a.

As described above, in order to provide the avoidance space for the arrangement of the second speaker unit 4b, the outer shape of the first speaker unit 4a is improved. In order to ensure that the sound output of the first speaker unit 4a is not affected by the change in the outer shape of the first speaker unit 4a, the structure of each component of the first speaker unit 4a is also adaptively adjusted according to the change in the outer shape thereof. In the following description, the structure of the first speaker unit 4a will be described in detail taking the first contour surface 4aa as a plane and the second contour surface 4ab as an arc surface extending in the circumferential direction of the housing 1 as an example. As will be appreciated by those skilled in the art after reading this disclosure, when the outer peripheral surface of the first speaker unit 4a is of another shape (for example, when the outer peripheral contour of the first speaker unit 4a is of an oval shape extending along the circumferential direction of the housing 1), the overall structure of the first speaker unit 4a is adapted according to the change of the outer shape thereof.

Referring to fig. 10, fig. 10 is a schematic exploded view of the first speaker unit 4a shown in fig. 9 a. In this embodiment, the first speaker unit 4a includes a first frame 4a24, a first diaphragm group 4a21, a first voice coil 4a22, and a first magnetic circuit system 4a23. The first frame 4a24, the first diaphragm group 4a21, the first voice coil 4a22, and the first magnetic circuit 4a23 are coaxially disposed.

The first diaphragm set 4a21 is a main body for pushing air in the front cavity X1 of the first speaker unit 4a to move. When the first speaker unit 4a shown in fig. 10 is applied to the inside of the housing 1 of the earphone 100, referring back to fig. 7, the first speaker unit 4a partitions the space inside the housing 1 into the front chamber X1 and the rear chamber X2 by means of the first diaphragm group 4a21 and the second speaker unit 4 b.

In order to improve the sealing effect of the rear cavity X2, a sealant 7 may be provided between the second contour surface 4ab and the second inner peripheral surface region 10b of the first speaker unit 4a and between the first contour surface 4aa, the second speaker unit 4b and the first inner peripheral surface region 10a of the first speaker unit 4 a. The sealant 7 includes, but is not limited to, one or more of UV glue (also called shadowless glue), polyurethane, silicone rubber, polysulfide rubber, neoprene rubber, and epoxy resin sealant. With this sealant, a gap between the first speaker unit 4a and the second speaker unit 4b and the inner peripheral surface of the housing 1 can be sealed, so that the rear chamber K2 is formed as a closed chamber. The sealing device is simple in structure, convenient to operate, suitable for sealing gaps of different shapes, wide in application range and excellent in flexibility. The sealant 7 further adheres the first speaker unit 4a and the second speaker unit 4b to the housing 1, so that the connection stability between the first speaker unit 4a and the second speaker unit 4b and the housing 1 can be improved.

It will be appreciated that fig. 10 and the following related drawings only schematically show some of the components comprised by the first speaker unit 4a, the actual size, actual position and actual configuration of which are not limited by fig. 10 and the following drawings.

Specifically, the first frame 4a24 serves as a "support skeleton" of the first speaker unit 4a for supporting the first diaphragm group 4a21, the first voice coil 4a22, and the first magnetic circuit system 4a23.

The material of the first frame 4a24 includes, but is not limited to, metal, plastic, and a combination of metal and plastic. In order to improve the supporting reliability of the first frame 4a24, the material of the first frame 4a24 may be selected to be metal. Illustratively, the first basin stand 4a24 is made of copper, iron or aluminum.

The first frame 4a24 may be an integral part, that is, the first frame 4a24 may be a unitary structure. Thus, the connection strength of the first frame 4a24 is advantageously improved. Of course, the present application is not limited thereto, and the first tub 4a24 may be formed of different components assembled together, and a plurality of different components may be connected by fastening, screwing, gluing, welding, or the like.

With continued reference to fig. 10, and in conjunction with fig. 11, fig. 11 is a schematic structural view of the first basin stand 4a24 shown in fig. 10. In this embodiment, the first frame 4a24 includes an annular peripheral wall 4a241 and a bottom wall 4a242. The peripheral wall 4a241 may be provided coaxially with the housing 1. The end of the peripheral wall 4a241, which is far from the sound outlet 110, is connected to the bottom wall 4a242, so that an inner space of the first frame 4a24 can be defined, so that the first diaphragm group 4a21, the first voice coil 4a22 and the first magnetic circuit 4a23 can be conveniently installed.

With continued reference to fig. 11, the peripheral wall 4a241 includes a first portion 4a2411 and a second portion 4a2412. The first portion 4a2411 and the second portion 4a2412 are arranged and connected in the circumferential direction of the first frame 4a 24.

The first portion 4a2411 is flat plate-shaped such that a surface of the first portion 4a2411 facing away from the second portion 4a2412 forms a first contoured surface 4aa. The second portion 4a2412 is curved along a circumferential extension path of the first frame 4a24 so that a surface of the second portion 4a2412 facing away from the first portion 4a2411 forms a second contour surface 4ab. By the arrangement, the first basin frame 4a24 can be directly used as the shell of the first speaker unit 4a, the shell is not required to be additionally arranged, the structure of the first speaker unit 4a can be simplified, the cost is reduced, and the size of the first speaker unit 4a is set larger, so that the effective vibration area of the first vibrating diaphragm set 4a21 is increased, and the sound emitting effect of the first speaker unit 4a is ensured.

Referring to fig. 12 and 13, fig. 12 is a schematic view of the first speaker unit 4a shown in fig. 9a in another direction; fig. 13 is a schematic sectional structure of the first speaker unit 4a shown in fig. 12 at the C-C line. In this embodiment, the outer edge of the first diaphragm group 4a21 is connected to the inner peripheral wall of the first frame 4a 24.

Specifically, referring to fig. 13, and in conjunction with fig. 14, fig. 14 is an enlarged view of a circled portion at D of the first speaker unit 4a shown in fig. 13. In this embodiment, the inner peripheral surface of the first frame 4a24 is provided with an annular groove 4a2413 recessed toward a direction away from the central axis of the first frame 4a24, the annular groove 4a2413 extends in an annular shape along the circumferential direction of the first frame 4a24, the annular groove 4a2413 penetrates to an end face of the open end of the first frame 4a24, that is, to an end face of the sound outlet hole 110, and the outer edge of the first diaphragm group 4a21 is accommodated in the annular groove 4a2413 and fixed on the bottom face of the annular groove 4a 2413. Through acceping the outward flange of first vibrating diaphragm group 4a21 in annular groove 4a2413 and be fixed in on the bottom surface of annular groove 4a2413, be favorable to utilizing annular groove 4a2413 to effectively support first vibrating diaphragm group 4a21, the volume of space in the first basin frame 4a24 can be increased in the setting of annular groove 4a2413 simultaneously, be favorable to setting up the size of first vibrating diaphragm group 4a21 bigger, and then be favorable to increasing the effective vibrating area of first vibrating diaphragm group 4a21, improve the play sound effect of speaker 4. It is understood that the annular groove 4a2413 may not be provided on the first frame 4a24, and the outer edge of the first diaphragm set 4a21 may be directly connected to the inner peripheral wall 4a241 of the first frame 4a 24.

Referring to fig. 15a, fig. 15a is a schematic structural diagram of the first diaphragm set 4a21 shown in fig. 10. In this embodiment, the first diaphragm group 4a21 includes: a first connecting portion 4a211, a first ring 4a212, and a first dome 4a213.

The outer peripheral edge of the first ring 4a212 is connected to the inner peripheral edge of the first connecting portion 4a211 such that the shape of the inner edge of the first connecting portion 4a211 is adapted to the shape of the outer edge of the first ring 4a 212. The outer edge of the first dome 4a213 is connected to the inner edge of the first fold ring 4a212 such that the shape of the inner edge of the first fold ring 4a212 is adapted to the shape of the outer edge of the first dome 4a213.

Specifically, referring to fig. 15a, and referring to fig. 14, the first connecting portion 4a211 has a ring-shaped sheet shape. The first connection portion 4a211 is laminated on the bottom surface of the annular groove 4a2413, so that the first diaphragm group 4a21 is connected to the first frame 4a24 by means of the first connection portion 4a 211. The connection manner of the first connection portion 4a211 and the annular groove 4a2413 includes, but is not limited to, gluing, clamping, welding or screw connection.

The first connection portion 4a211 includes a first connection section 4a2111 and a second connection section 4a2112. The first and second connection sections 4a2111 and 4a2112 are arranged and connected in the circumferential direction of the first frame 4a 24.

Specifically, please refer to fig. 15a, and refer to fig. 15b, fig. 15b is a schematic diagram illustrating the assembly of the first diaphragm set 4a21 and the first frame 4a24 shown in fig. 10. The first connection section 4a2111 extends linearly in the circumferential direction of the first frame 4a24, and the first connection section 4a2111 is located between the first portion 4a2411 and the second connection section 4a 2112. In this way, the extension path of the first connection section 4a2111 in the circumferential direction of the first frame 4a24 may be the same as the extension path of the first portion 4a2411 in the circumferential direction of the first frame 4a24, so that the first connection section 4a2111 is correspondingly adapted to the first portion 4a 2411.

The second connection section 4a2112 extends in an arc shape along the circumferential direction of the first frame 4a24, and the second connection section 4a2112 is located between the second portion 4a2412 and the first connection section 4a 2111. In this way, the extension path of the second connection section 4a2112 in the circumferential direction of the first frame 4a24 may be the same as the extension path of the second portion 4a2412 in the circumferential direction of the first frame 4a24, so that the second connection section 4a2112 is correspondingly adapted to the second portion 4a 2412. Specifically, the second connection section 4a2112 is concentric with the second portion 4a 2412.

The first ring 4a212 includes a first segment 4a2121 and a second segment 4a2122. The first section 4a2121 and the second section 4a2122 are arranged and connected in the circumferential direction of the first tub 4a 24.

The first section 4a2121 extends linearly in the circumferential direction of the first frame 4a24, and the first section 4a2121 is located between the first connecting section 4a2111 and the second section 4a 2122. The extension path of the first section 4a2121 in the circumferential direction of the first frame 4a24 is thus identical to the extension path of the first portion 4a2411 in the circumferential direction of the first frame 4a24, so that the first section 4a2121 may correspond to the first portion 4a2411.

The second segment 4a2122 extends in an arc shape in the circumferential direction of the first frame 4a24, and the second segment 4a2122 is located between the second connecting segment 4a2112 and the first segment 4a 2121. In this way, the extension path of the second segment 4a2122 along the circumferential direction of the first frame 4a24 is identical to the extension path of the second portion 4a2412 along the circumferential direction of the first frame 4a24, so that the second segment 4a2122 corresponds to the second portion 4a2412. Specifically, the second section 4a2122 is concentric with the second portion 4a2412.

According to the first diaphragm group 4a21 of the embodiment of the application, the shapes of the first connecting portion 4a211, the first folding ring 4a212 and the first dome 4a213 of the first diaphragm group 4a21 are matched with the shape of the peripheral wall 4a241 of the first frame 4a24, so that the connection reliability of the first diaphragm group 4a21 and the first frame 4a24 is improved, the size of the first diaphragm group 4a21 is set to be larger, the effective vibration area of the first diaphragm group 4a21 is ensured, and the sound emitting effect of the first speaker unit 4a is improved.

It can be appreciated that, since the first connection portion 4a211, the first folding ring 4a212 and the first dome 4a213 are all adapted to the shape of the peripheral wall 4a241 of the first frame 4a 24. The first diaphragm group 4a21 is thus symmetrically shaped. Referring to fig. 16, fig. 16 is a schematic view illustrating another direction of the first diaphragm set 4a shown in fig. 15 a. In this example, the first diaphragm group 4a21 is disposed symmetrically with respect to a plane m1m1 passing through the axis of the second section 4a2122 and perpendicular to the first section 4a2121 as a plane of symmetry. In this way, when the first voice coil 4a22 drives the first diaphragm group 4a21 to vibrate, the driving forces born by the first diaphragm group 4a21 on two sides of the symmetry plane are the same, so that rolling vibration of the first diaphragm group 4a21 in a direction perpendicular to the symmetry plane can be avoided.

Although the first diaphragm group 4a21 is symmetrically disposed in a direction perpendicular to the first section 4a 2121. However, since the first section 4a2121 is shaped and sized differently from the second section 4a2122, this results in an asymmetric arrangement between the first section 4a2121 and the second section 4a2122, i.e., the first section 4a2121 and the second section 4a2122 cannot be symmetrical about the plane m2m2 in fig. 16, where the plane m2m2 is perpendicular to the plane m1m1 and passes through the axis of the second section 4a 2122. Therefore, when the first voice coil 4a22 drives the first diaphragm group 4a21 to vibrate, there is a large difference in the magnitude of the driving force applied to the first diaphragm group 4a21 on both sides of the plane m2m2, which results in that the first diaphragm group 4a21 cannot vibrate in a piston type, and there is a risk of rolling vibration of the first diaphragm group 4a21 in a direction perpendicular to the plane m2m 2. In order to reduce the difference in driving force to which the first diaphragm group 4a21 is subjected, the first section 4a2121 and the second section 4a2122 are equal in width.

In some examples, the first diaphragm group 4a21 is an integral piece. That is, the first connecting portion 4a211, the first ring 4a212, and the first dome 4a213 are a unitary structure. The arrangement is beneficial to improving the structural strength of the first vibrating diaphragm group 4a21 and is convenient for processing and manufacturing the first vibrating diaphragm group 4a 21. Of course, the present application is not limited thereto, and the first connecting portion 4a211, the first ring 4a212 and the first dome 4a213 may be separately manufactured, and then the first connecting portion 4a211 and the first ring 4a212 may be connected by gluing, and the first ring 4a212 and the first dome 4a213 may be connected by gluing.

On the basis of the above embodiment, please refer to fig. 17a, and combine with fig. 13, wherein fig. 17a is a schematic structural diagram of the first voice coil 4a22 shown in fig. 10. The first voice coil 4a22 is connected to an inner surface (i.e., a side surface facing away from the sound outlet hole 110) of the first dome 4a 213. The connection between the first voice coil 4a22 and the first dome 4a213 includes, but is not limited to, gluing.

The first voice coil 4a22 includes a first voice coil part 4a221 and a second voice coil part 4a222, and the first voice coil part 4a221 and the second voice coil part 4a222 are arranged and connected in the circumferential direction of the first bobbin 4a 24.

Referring to fig. 17a and 17b, fig. 17b is a schematic diagram illustrating the cooperation of the first voice coil 4a22, the first frame 4a24 and the first magnetic circuit 4a23 shown in fig. 10. The first voice coil portion 4a221 is formed in a flat plate shape parallel to the first portion 4a2411, and the first voice coil portion 4a221 is located between the first portion 4a2411 and the second voice coil portion 4a 222. In this way, the extension path of the first voice coil part 4a221 in the circumferential direction of the first frame 4a24 is the same as the extension path of the first part 4a2411 in the circumferential direction of the first frame 4a24, so that the first voice coil part 4a221 may correspond to the first part 4a2411.

The second voice coil portion 4a222 extends in an arc shape in the circumferential direction of the first bobbin 4a 24. The second voice coil portion 4a222 is located between the second portion 4a2412 and the first voice coil portion 4a 221. The extension path of the second voice coil part 4a222 along the circumferential direction of the first frame 4a24 is thus the same as the extension path of the second part 4a2412 along the circumferential direction of the first frame 4a24, so that the second voice coil part 4a222 may correspond to the second part 4a2412. Specifically, the second voice coil portion 4a222 and the second portion 4a2412 share a central line axis.

According to the first voice coil 4a22 of the embodiment of the application, by making the first voice coil 4a22 include the first voice coil part 4a221 and the second voice coil part 4a222, the first voice coil part 4a221 and the second voice coil part 4a222 are arranged and connected in the circumferential direction of the first frame 4a24, the extending path of the first voice coil part 4a221 in the circumferential direction of the first frame 4a24 is the same as the extending path of the first part 4a2411 in the circumferential direction of the first frame 4a24, and the extending path of the second voice coil part 4a222 in the circumferential direction of the first frame 4a24 is the same as the extending path of the second part 4a2412 in the circumferential direction of the first frame 4a 24. Therefore, the shape of the first voice coil 4a22, the shape of the first diaphragm group 4a21 and the shape of the first frame 4a23 are adapted, which is not only beneficial to realizing the compactness of the structure of the first speaker unit 4a, but also can improve the uniformity of the driving force of the first voice coil 4a22 to the first diaphragm group 4a21 in the circumferential direction at least to a certain extent when the first voice coil 4a22 pushes the first diaphragm group 4a21 to vibrate, and avoid the problem of polarization or rolling vibration of the first diaphragm group 4a21 caused by the shape mismatch of the first voice coil 4a22 and the first diaphragm group 4a21 at least to a certain extent.

Further, in order to ensure effective vibration at the center of the first dome 4a213 and effective pushing of the first diaphragm group 4a21 by the first voice coil 4a22, the outer peripheral surface of the first voice coil 4a22 is flush with the outer peripheral surface of the first dome 4a213 in the axial direction of the first voice coil 4a 22.

On the basis of the above embodiment, please refer to fig. 18, and also combine with fig. 13, wherein fig. 18 is a schematic structural diagram of the first magnetic circuit system 4a23 shown in fig. 10. The first magnetic circuit system 4a23 has an annular magnetic gap 4a23a, and an end of the first voice coil 4a22 away from the first diaphragm set 4a21 may extend into the magnetic gap 4a23a, so that the first magnetic circuit system 4a23 may cooperate with the first voice coil 4a22 to drive the first diaphragm set 4a21 to vibrate synchronously.

The first magnetic circuit 4a23 is fixed to the first frame 4a 24. Specifically, the bottom wall 4a242 of the basin frame 424 is provided with a mounting through hole 4a24a penetrating through the bottom wall 4a242, and the surface of the bottom wall 4a242 facing away from the peripheral wall 4a241 is provided with an annular flange 4a243 surrounding the mounting through hole 4a24 a. The first magnetic circuit 4a23 is fixed at the mounting through hole 4a24a, and is surrounded and restrained by the annular flange 4a243. Of course, it is understood that the first magnetic circuit 4a23 may be disposed in the first frame 4a24 when the mounting through hole 4a24a and the annular flange 4a243 are not disposed on the first frame 4a 24.

It will be appreciated that, since the first voice coil 4a22 is connected to the side of the first dome 4a213 facing away from the sound outlet hole 110, and the end of the first voice coil 4a22 facing away from the first diaphragm group 4a21 is engaged with the magnetic gap 4a23a of the first magnetic circuit system 4a 23. In this way, compared with the scheme that the first voice coil 4a22 is connected to the side, facing the sound outlet hole 110, of the first dome 4a213, and the end, far away from the first diaphragm group 4a21, of the first voice coil 4a22 is matched with the magnetic gap 4a23a of the first magnetic circuit system 4a23, the outer surface, facing the sound outlet hole 110, of the first diaphragm group 4a21 is not blocked by the first magnetic circuit system 4a23 and the first voice coil 4a22, which is favorable for ensuring the sound outlet area of the first diaphragm group 4a21, and further improving the sound outlet effect of the first speaker unit 4 a.

With continued reference to fig. 18, the magnetic gap 4a23a includes a first gap portion 4a23a1 and a second gap portion 4a23a2. The first gap portion 4a23a1 and the second gap portion 4a23a2 are arranged and communicate in the circumferential direction of the first frame 4a 24. The first gap portion 4a23a1 extends linearly in the circumferential direction of the first frame 4a24, so that the extending path of the first gap portion 4a23a1 in the circumferential direction of the first frame 4a24 may be the same as the extending path of the first voice coil portion 4a221 in the circumferential direction of the first frame 4a24, so that the first gap portion 4a23a1 is matched with the first voice coil portion 4a221 and the first voice coil portion 4a221 extends into. The second gap portion 4a23a2 extends in an arc shape in the circumferential direction of the first frame 4a24, so that the extending path of the second gap portion 4a23a2 in the circumferential direction of the first frame 4a24 may be the same as the extending path of the second voice coil portion 4a222 in the circumferential direction of the first frame 4a24, so that the second gap portion 4a23a2 is adapted to the second voice coil portion 4a222 and the second voice coil portion 4a222 extends into.

According to the first magnetic circuit system 4a23 of the embodiment of the present application, by making the magnetic gap 4a23a include the first gap portion 4a23a1 and the second gap portion 4a23a2, and the first gap portion 4a23a1 is fitted with the first voice coil portion 4a221, the second gap portion 4a23a2 is fitted with the second voice coil portion 4a 222. The shape of the whole magnetic gap 4a23a and the shape of the first voice coil 4a22 are adapted, so that the reliability of the fit between the first voice coil 4a22 and the first magnetic circuit 4a23 is guaranteed, and the uniformity of the driving force of the first diaphragm set 4a21 in the circumferential direction of the first frame 4a24 can be facilitated when the first voice coil 4a22 and the first magnetic circuit 4a23 are matched to drive the first diaphragm set 4a21 to vibrate, and the problem of rolling vibration of the first diaphragm set 4a21 is avoided at least to a certain extent.

Specifically, the width of the first gap portion 4a23a1 is smaller than the width of the second gap portion 4a23a 2. The smaller the width of the magnetic gap is, the larger the driving force of the magnetic circuit system to the vibrating diaphragm set after being matched with the voice coil is, and the smaller the driving force of the magnetic circuit system to the vibrating diaphragm set after being matched with the voice coil is. In the case of the first speaker unit 4a which is not symmetrically disposed with respect to the plane m2m2 as a symmetry plane, the driving force exerted on the first diaphragm group 4a21 side near the first portion 4a2411 during vibration is smaller than the driving force exerted on the first diaphragm group 4a21 side near the second portion 4a2412, and there is a risk of rolling vibration. By making the width of the first gap portion 4a23a1 smaller than the width of the second gap portion 4a23a2, the driving force exerted on the first diaphragm group 4a21 on the side close to the first portion 4a2411 is advantageously increased, at least to some extent, the uniformity of the driving force exerted on the first diaphragm group 4a21 in the circumferential direction of the first frame 4a24 is improved, and the problem of rolling vibration of the first diaphragm group 4a21 is avoided.

With continued reference to fig. 18, the first magnetic circuit system 4a23 includes: side magnetic portion 4a231 and first center magnetic portion 4a232. The side magnetic portion 4a231 is located at the outer periphery of the first center magnetic portion 4a232 to define a magnetic gap 4a23a with the first center magnetic portion 4a232. The magnetizing directions of the side magnetic part 4a231 and the first center magnetic part 4a232 are opposite, so that the side magnetic part 4a231 and the first center magnetic part 4a232 can form a magnetic circuit for driving the first voice coil 4a22 to move. Illustratively, along the axial direction of the first basin frame 4a24 and facing away from the first diaphragm set 4a21, the magnetizing direction of the side magnetic portion 4a231 is from the north pole (N) to the south pole (S), and the magnetizing direction of the first center magnetic portion 4a232 is from the south pole (S) to the north pole (N).

With continued reference to fig. 18, the side magnetic portion 4a231 may be formed in a ring shape, and the side magnetic portion 4a231 includes a first sub-portion 4a231a and a second sub-portion 4a231b. The first sub-portion 4a231a and the second sub-portion 4a231b are arranged and connected in the circumferential direction of the first tub 4a 24.

With continued reference to fig. 18, and in conjunction with fig. 17b, the first sub-portion 4a231a is planar, and the first sub-portion 4a231a is located between the first portion 4a2411 and the second sub-portion 4a231b. In this way, the extension path of the first sub-portion 4a231a in the circumferential direction of the first frame 4a24 may be the same as the extension path of the first portion 4a2411 in the circumferential direction of the first frame 4a 24. The second sub-portion 4a231b extends in an arc shape along the circumferential direction of the first frame 4a24, and the second sub-portion 4a231b is located between the second portion 4a2412 and the first sub-portion 4a231 a. In this way, the extension path of the second sub-portion 4a231b in the circumferential direction of the first frame 4a24 may be the same as the extension path of the second portion 4a2412 in the circumferential direction of the first frame 4a 24. Specifically, the second sub-portion 4a231b is concentric with the second portion 4a 2412.

Referring to fig. 19, fig. 19 is a schematic structural diagram of the side magnetic portion 4a231 and the second center magnetic portion 4a233 of the first magnetic circuit system 4a23 shown in fig. 18. In order to effectively support the first central magnetic portion 4a232, the first magnetic circuit system 4a23 further includes a second central magnetic portion 4a233, the second central magnetic portion 4a233 blocks one end of the side magnetic portion 4a231 away from the first diaphragm group 4a21, and the first central magnetic portion 4a232 and the second central magnetic portion 4a233 are stacked.

The second central magnetic portion 4a233 and the side magnetic portions 4a231 may be integrally formed. That is, the second center magnetic portion 4a233 and the side magnetic portion 4a231 may be one structural unit. The second central magnetic portion 4a233 and the side magnetic portions 4a231 may be further connected by means of gluing, clamping, screwing, or the like.

Specifically, the second central magnetic portion 4a233 may be a magnetic conductive material member. In this way, the second central magnetic portion 4a233 can be used to restrict leakage of the magnetic lines, and increase the magnetic induction intensity of the first magnetic circuit 4a 23. Of course, the present application is not limited thereto, and in other examples, the second central magnetic portion 4a233 may be a magnet. Specifically, the magnet is a magnet or a magnetic steel.

Referring to fig. 20 in conjunction with fig. 18, fig. 20 is a schematic diagram illustrating the cooperation between the first central magnetic portion 4a232 and the magnetic yoke 4a234 of the first magnetic circuit system 4a23 shown in fig. 18. The outer peripheral surface of the first central magnetic portion 4a232 includes a first surface 4a232a and a second surface 4a232b.

The first face 4a232a and the second face 4a232a are arranged and connected in the circumferential direction of the first frame 4a 24. The first face 4a232a is a plane parallel to the first profile face 4aa, and the first face 4a232a corresponds to and is spaced apart from the first sub-portion 4a231a to define a first gap portion 4a23a1.

The second surface 4a232b is an arc surface extending along the circumferential direction of the first frame 4a24, and the second surface 4a232b corresponds to and is spaced apart from the second sub-portion 4a231b to define a second gap portion 4a23a2. Specifically, the second surface 4a232b is concentric with the second contour surface 4 ab.

In this way, the first magnetic circuit 4a23 of the embodiment of the present application may define the magnetic gap 4a23a adapted to the shape of the first voice coil 4a22, which is favorable to ensure the reliability of the fit between the first voice coil 4a22 and the first magnetic circuit 4a23, so as to ensure the uniformity of the driving force of the first diaphragm group 4a21 in the circumferential direction of the first frame 4a24 and avoid the rolling vibration problem of the first diaphragm group 4a21 when the first voice coil 4a22 is matched with the first magnetic circuit 4a23 to drive the first diaphragm group 4a21 to vibrate.

In some examples, both the side magnetic portion 4a231 and the first center magnetic portion 4a232 may be magnets. Illustratively, the side magnetic portion 4a231 and the first center magnetic portion 4a232 are both magnets or magnetic steels. Of course, the present application is not limited thereto, and in other embodiments, one of the side magnetic portion 4a231 and the first center magnetic portion 4a232 is a magnet, and the other is a magnetic conductive material member.

In order to increase the magnetic induction of the first magnetic circuit system 4a23, please refer to fig. 20, and referring to fig. 18, the first magnetic circuit system 4a23 further includes a magnetic conductive yoke 4a234, and the magnetic conductive yoke 4a234 is disposed on a side of the first central magnetic portion 4a232 facing the first diaphragm set 4a21, for restraining the magnetic line from leaking out, so as to increase the driving force to the first diaphragm set 4a 21.

Specifically, the outer peripheral surface of the magnetic yoke 4a234 is flush with the outer peripheral surface of the first central magnetic portion 4a232 in the axial direction of the first magnetic circuit system 4a 23. Thus, the shape of the outer peripheral surface of the magnetic yoke 4a234 is the same as the shape of the outer peripheral surface of the first central magnetic portion 4a232, and the magnetic yoke 4a234 is fitted to the first central magnetic portion 4a 232. In this way, the restraining effect of the magnetic yoke 4a234 on the magnetic force lines is further improved, the magnetic induction intensity of the first magnetic circuit system 4a23 is increased, the magnetic gap 4a23a is not affected by the magnetic yoke 4a234, and the suitability of the first magnetic circuit system 4a23 and the first voice coil 4a22 is improved.

On the basis of the above-described embodiment, referring to fig. 21 and 22, fig. 21 is a schematic structural view of the second speaker unit 4b in the earphone 100 shown in fig. 6; fig. 22 is a schematic sectional structure of the second speaker unit 4b shown in fig. 21 at the line E-E. In this embodiment, the second speaker unit 4b may be a moving iron tweeter. The second speaker unit 4b may include: the protection shell 4b1, the second vibrating diaphragm group 4b21, the reed 4b22, the transmission rod 4b23, the second magnetic circuit system 4b24 and the second voice coil 4b25.

It is to be understood that fig. 21, 22 and the following related drawings only schematically show some of the components included in the second speaker unit 4b, and the actual shape, actual size, actual position and actual configuration of these components are not limited by fig. 21, 22 and the following drawings.

The protective case 4b1 serves as a carrier for the respective components in the second speaker unit 4b for protecting the second diaphragm group 4b21, the reed 4b22, the transmission rod 4b23, the second magnetic circuit 4b24, the second voice coil 4b25, and the like.

A sound outlet passage 4b11 is formed at a side of the shield case 4b1 adjacent to the sound outlet hole 110, and sound of the second speaker unit 4b can be emitted from the sound outlet passage 4b11, so that both the second speaker unit 4b and the first speaker unit 4a can be made to sound toward the sound outlet hole 110.

The material of the protective shell 4b1 includes, but is not limited to, metal, plastic, and a combination of metal and plastic. In some embodiments, the material of the protective housing 4b1 is plastic, which has low cost and is easy to mold, so as to reduce the processing cost of the second speaker unit 4 b. In other examples, to increase the structural strength of the protective shell 4b1, the protective shell 4b1 may be made of metal.

The shield shell 4b1 extends along the sound emitting direction of the sound emitting hole 110, that is, the length direction of the shield shell 4b1 is the same as the sound emitting direction of the sound emitting hole 110. Specifically, referring to fig. 21, the protective housing 4b1 may have a rectangular parallelepiped shape.

Of course, the present application is not limited thereto, and in other examples, please refer to fig. 23, fig. 23 is a schematic diagram of a portion of a structure of an earphone 100 according to still other embodiments of the present application. The cross section of the protective housing 4b1 may also be formed as a small semicircle, the surface of the protective housing 4b1 facing away from the first speaker unit 4a being adaptable to the first inner circumferential surface area 10 a. This arrangement is advantageous in that the space of the housing 1 is fully utilized, compactness of the structure is achieved, and the second speaker unit 4b is facilitated to be mated with the first speaker unit 4a to partition the front chamber X1 and the rear chamber X2 of the first speaker unit 4 a.

The protective housing 4b1 may be a structural whole or may be formed by assembling a plurality of parts. In some embodiments, please continue to refer to fig. 22. The protective shell 4b1 includes a first shell portion 4b1a and a second shell portion 4b1b. The protective shell 4b1 is formed by assembling the first shell portion 4b1a and the second shell portion 4b1b, so that the first shell portion 4b1a and the second shell portion 4b1b can be conveniently processed respectively, the die structure of the first shell portion 4b1a and the second shell portion 4b1b is facilitated to be simplified, the molding difficulty of the first shell portion 4b1a and the second shell portion 4b1b is reduced, and the processing and manufacturing difficulty of the protective shell 4b1 is further reduced.

With continued reference to fig. 22, the second diaphragm set 4b21 is disposed in the protective housing 4b 1. The second diaphragm group 4b21 is parallel to the axial direction of the first speaker unit 4 a. Compared with the scheme that the second diaphragm group 4b21 is perpendicular to the axial direction of the first speaker unit 4a, the effective vibration area of the second diaphragm group 4b21 is ensured, and the thickness dimension of the second speaker unit 4b in the radial direction of the first speaker unit 4a is reduced.

The second speaker unit 4b divides the space inside the shield case 4b1 into a front chamber k1 and a rear chamber k2 by means of the second diaphragm group 4b21, such that the front chamber k1 and the rear chamber k2 are arranged in the radial direction of the first speaker unit 4 a. In some examples, the front cavity k1 is located on a side of the rear cavity k2 remote from the first speaker unit 4 a. This arrangement is advantageous in reducing the sound emission interference between the first speaker unit 4a and the second speaker unit 4 b. In other examples, the rear chamber k2 is located on a side of the front chamber k1 remote from the first speaker unit 4 a.

Referring to fig. 24, fig. 24 is a schematic structural diagram of a second diaphragm set 4b21 of the second speaker unit 4b shown in fig. 21. The second diaphragm group 4b21 includes a second connecting portion 4b21a, a second folded ring 4b21b, and a second dome 4b21c.

The second connecting portion 4b21a has an annular sheet shape, and the second connecting portion 4b21a has a rounded rectangular ring.

Referring to fig. 24, and referring to fig. 22, a step portion 4b12 is provided on the inner peripheral surface of the protective case 4b1, and the second connection portion 4b21a is stacked on the step portion 4b 12. The connection relationship between the second connecting portion 4b21a and the step portion 4b12 includes, but is not limited to, gluing. Of course, in other examples, the shield shell 4b1 may be provided without a stepped portion, instead the second connection portion 4b21a may be provided in a ring-shaped tubular shape, and the second connection portion 4b21a may be connected to the inner peripheral surface of the shield shell 4b 1.

The second fold ring 4b21b is provided on the outer periphery of the second dome 4b21c and is surrounded by the second connection portion 4b21 a. The second fold ring 4b21b has a rounded rectangular ring shape. The second folder 4b21b is recessed toward one side near the rear cavity K2 to form an arc-shaped or nearly arc-shaped cross section, which is provided to save space of the front cavity K1. Of course, the present application is not limited thereto, and in other embodiments, the second fold ring 4b21b is recessed toward a side near the front cavity K1 to form an arc or a nearly arc-shaped cross section.

In some examples, the second diaphragm group 4b21 may be an integral piece. That is, the second connecting portion 4b21a, the second fold ring 4b21b, and the second dome 4b21c are integrally formed and connected as a single body. The arrangement not only facilitates the simplification of the processing technology and the reduction of the production cost, but also improves the connection strength between the second connecting part 4b21a and the second folding ring 4b21b and between the second folding ring 4b21b and the second dome 4b21 c. Of course, the present application is not limited thereto, and in other embodiments, the second connecting portion 4b21a, the second folding ring 4b21b, and the second dome 4b21c may be manufactured separately and then connected by gluing or the like.

With continued reference to fig. 22, a reed 4b22 is disposed in the rear cavity K2 of the second speaker unit 4b for providing a driving force for the vibration of the second diaphragm set 4b 21. The material of the reed 4b22 includes, but is not limited to, metal.

Referring to fig. 25, fig. 25 is a schematic structural view of the reed 4b22 of the second speaker unit 4b shown in fig. 21. The reed 4b22 includes a first sheet 4b221, a second sheet 4b222, and a connecting sheet 4b223.

The first sheet 4b221 has a rectangular sheet shape. The first sheet 4b221 is disposed parallel to the second diaphragm group 4b 21. The second sheet 4b222 has a rectangular sheet shape. The second sheet body 4b222 is disposed parallel to the second diaphragm group 4b21, and the second sheet body 4b222 is located on a side of the first sheet body 4b221 away from the second diaphragm group 4b 21. The second sheet 4b222 may have the same size as the first sheet 4b 221.

One end of the second sheet 4b222 is provided with a supporting body 4b224 that extends beyond the edge of the first sheet 4b221, and the supporting body 4b224 has a triangular shape. In some examples, the support body 4b224 and the second sheet body 4b222 may be an integral piece, i.e., the support body 4b224 and the second sheet body 4b222 are connected as one structural unit. In other examples, the support body 4b224 and the second sheet body 4b222 may be connected by gluing, clamping, welding, or screwing.

The shape of the connection sheet 4b223 includes, but is not limited to, a "C" shape and a "V" shape. The connection piece 4b223 is connected between an end of the second piece 4b222 remote from the support body 4b224 and an end of the first piece 4b221 remote from the support body 4b 224.

The reed 4b22 can be an integral piece. That is, the first sheet 4b221, the second sheet 4b222, and the connection sheet 4b223 are connected as a single body. This arrangement not only facilitates simplification of the processing process and reduction of the production cost, but also improves the strength of the connection between the first sheet 4b221 and the connection sheet 4b223 and between the second sheet 4b222 and the connection sheet 4b 223. Of course, the present application is not limited thereto, and in other embodiments, the first sheet body 4b221, the second sheet body 4b222, and the connection sheet body 4b223 may be manufactured separately and then connected by gluing or welding.

With continued reference to fig. 22, the transmission rod 4b23 is rod-shaped, the transmission rod 4b23 is connected between the support body 4b224 and the second dome 4b21c, and the transmission rod 4b23 is disposed perpendicular to the second sheet body 4b 222. By the connection of the transmission rod 4b23, the vibration of the reed 4b22 can be transmitted to the second diaphragm group 4b21, thereby causing the sound of the second speaker unit 4 b.

The material of the transmission rod 4b23 includes, but is not limited to, metal or hard plastic. The connection between the transmission rod 4b23 and the second sheet 4b222 includes, but is not limited to, gluing, welding, clamping or screwing. The connection between the transmission rod 4b23 and the second diaphragm set 4b21 includes, but is not limited to, gluing, welding, clamping or screwing.

Referring to fig. 26, and in conjunction with fig. 22, fig. 26 is a schematic structural diagram of the second magnetic circuit system 4b24 of the second speaker unit 4b shown in fig. 21. The second magnetic circuit 4b24 is located in the rear chamber K2 of the second speaker unit 4 b. The second magnetic circuit system 4b24 includes a magnetically conductive portion 4b241 and two magnet portions 4b242.

The magnetic conductive portion 4b241 has a rectangular annular shape. The axial direction of the magnetic conductive portion 4b241 is the same as the axial direction of the first frame 4a 24. The first sheet body 4b221 is supported on a side surface of the magnetically conductive portion 4b241 adjacent to the second diaphragm group 4b 21. The connection between the first sheet 4b221 and the magnetically conductive portion 4b241 includes, but is not limited to, gluing or clamping.

The two magnet portions 4b242 are provided in the magnetically conductive portion 4b241 and are disposed opposite to each other in the radial direction of the magnetically conductive portion 4b 241.

The shape of the magnet portion 4b242 includes, but is not limited to, a rectangular parallelepiped shape, a cylindrical shape, or a special shape. The magnetizing directions of the two magnet portions 4b2 are opposite. For example, one end of one of the magnet portions 4b242 close to the central axis of the magnetically conductive portion 4b241 is an N pole, and one end of the other magnet portion 4b242 close to the central axis of the magnetically conductive portion 4b241 is an S pole, and one end of the other magnet portion 4b242 close to the central axis of the magnetically conductive portion 4b241 is an N pole.

With continued reference to fig. 22, the second sheet body 4b222 extends from one axial end of the magnetic conductive portion 4b241 to the other axial end of the magnetic conductive portion 4b241, such that the supporting body 4b224 is located outside the magnetic conductive portion 4b241, and the second sheet body 4b222 is located between the two magnet portions 4b 242.

The second voice coil 4b25 is located on a side of the magnetic conductive portion 4b241 in the axial direction adjacent to the connection piece body 4b223, and the second voice coil 4b25 surrounds the outer periphery of the second piece body 4b 222.

When the second voice coil 4b25 is energized, the second voice coil 4b25 may generate a magnetic field such that the second sheet body 4b222 located in the second voice coil 4b25 is magnetized to generate a magnetic pole. In this way, a driving force for driving the second sheet body 4b222 to vibrate along the direction of the interval between the two magnet portions 4b242 is formed between the second voice coil 4b25 and the magnet portion 4b242, the vibration of the second sheet body 4b222 can drive the transmission rod 4b23 to vibrate, the vibration of the transmission rod 4b23 further drives the vibration of the second vibrating diaphragm set 4b21, and the vibration of the second vibrating diaphragm set 4b21 can drive the air in the front cavity K1 to vibrate to generate sound waves, and the sound waves are emitted by the sound emitting channel 4b 11.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A speaker module for an earphone, the earphone comprising a housing, the speaker module comprising:

a first speaker unit (4 a), the first speaker unit (4 a) including a first diaphragm group (4 a 21), an outer surface of the first diaphragm group (4 a 21) facing the first side;

a second speaker unit (4 b), the second speaker unit (4 b) being located on one circumferential side of the first speaker unit (4 a), the second speaker unit (4 b) sounding toward the first side, the sounding frequency of the second speaker unit (4 b) being greater than the sounding frequency of the first speaker unit (4 a);

the outer peripheral surface of the first speaker unit (4 a) comprises a first contour surface (4 aa) and a second contour surface (4 ab), and the first contour surface (4 aa) and the second contour surface (4 ab) are arranged and connected along the circumferential direction of the first speaker unit (4 a);

The inner peripheral surface of the shell (1) comprises a first inner peripheral surface area (10 a) and a second inner peripheral surface area (10 b), and the first inner peripheral surface area (10 a) and the second inner peripheral surface area (10 b) are arranged and connected along the circumferential direction of the shell (1);

the first contour surface (4 aa) is opposite to and spaced apart from the first inner peripheral surface region (10 a), the second contour surface (4 ab) is matched with the second inner peripheral surface region (10 b), and the second speaker unit (4 b) is located between the first contour surface (4 aa) and the first inner peripheral surface region (10 a).

2. The speaker module according to claim 1, wherein the second inner peripheral surface region (10 b) and the second contour surface (4 ab) are arc surfaces each extending in a circumferential direction of the housing (1) and arched away from the first contour surface (4 aa).

3. The speaker module according to claim 2, wherein the first contour surface (4 aa) is a plane; alternatively, the first contour surface (4 aa) is an arcuate surface that arches toward the first inner peripheral surface region (10 a).

4. A loudspeaker module according to any one of claims 1-3, characterized in that the first loudspeaker unit (4 a) comprises a first frame (4 a 24), the first diaphragm group (4 a 21) being supported on the first frame (4 a 24) and being arranged concentrically with the first frame (4 a 24), the peripheral wall of the first frame (4 a 24) comprising a first portion and a second portion arranged and connected in the circumferential direction of the first frame (4 a 24), the surface of the first portion facing away from the second portion forming the first contour (4 aa), the surface of the second portion facing away from the first portion forming the second contour (4 ab).

5. The speaker module according to claim 4, wherein the first diaphragm group (4 a 21) has a first fold ring (4 a 212), the first fold ring (4 a 212) includes a first segment (4 a 2121) and a second segment (4 a 2122), the first segment (4 a 2121) and the second segment (4 a 2122) are arranged and connected in a circumferential direction of the first frame (4 a 24), an extension path of the first segment (4 a 2121) along the circumferential direction of the first frame (4 a 24) is the same as an extension path of the first portion along the circumferential direction of the first frame (4 a 24), an extension path of the second segment (4 a 2122) along the circumferential direction of the first frame (4 a 24) is the same as an extension path of the second portion along the circumferential direction of the first frame (4 a 24), and the first segment (4 a 1) is located between the first segment (2124 a 2) and the second segment (2122).

6. The speaker module of claim 5, wherein the first section (4 a 2121) is equal in width to the second section (4 a 2122).

7. The speaker module according to claim 4, wherein an inner peripheral surface of the first frame (4 a 24) is provided with an annular groove (4 a 2413) recessed toward a direction away from a central axis of the first frame (4 a 24), the annular groove (4 a 2413) extends in a circumferential direction of the first frame (4 a 24), and the annular groove (4 a 2413) penetrates to an end surface of an open end of the first frame (4 a 24), and an outer edge of the first diaphragm group (4 a 21) is accommodated in the annular groove (4 a 2413) and is fixed on a bottom surface of the annular groove (4 a 2413).

8. The loudspeaker module of claim 4, wherein the first loudspeaker unit (4 a) comprises a first voice coil (4 a 22), the first voice coil (4 a 22) being connected to an inner surface of the first diaphragm group (4 a 21);

the first voice coil (4 a 22) comprises a first voice coil part (4 a 221) and a second voice coil part (4 a 222) which are arranged and connected in the circumferential direction of the first frame (4 a 24), the extension path of the first voice coil part (4 a 221) along the circumferential direction of the first frame (4 a 24) is the same as the extension path of the first part along the circumferential direction of the first frame (4 a 24), the first voice coil part (4 a 221) is positioned between the first part and the second voice coil part (4 a 222), the extension path of the second voice coil part (4 a 222) along the circumferential direction of the first frame (4 a 24) is the same as the extension path of the second part along the circumferential direction of the first frame (4 a 24), and the second voice coil part (4 a 222) is positioned between the second part and the first voice coil part (4 a 221).

9. The loudspeaker module according to claim 8, wherein the first loudspeaker unit (4 a) comprises a first magnetic circuit (4 a 23), the first magnetic circuit (4 a 23) being fixed to the first frame (4 a 24), the first magnetic circuit (4 a 23) having an annular magnetic gap (4 a23 a);

The magnetic gap (4 a23 a) comprises a first gap part (4 a23a 1) and a second gap part (4 a23a 2), the first gap part (4 a23a 1) and the second gap part (4 a23a 2) are arranged and communicated in the circumferential direction of the first basin frame (4 a 24), the first gap part (4 a23a 1) is matched with the first voice coil part (4 a 221), and the second gap part (4 a23a 2) is matched with the second voice coil part (4 a 222).

10. The speaker module according to claim 9, wherein the width of the first gap portion (4 a23a 1) is smaller than the width of the second gap portion (4 a23a 2).

11. A loudspeaker module according to any of claims 1-3, 5-10, characterized in that the surface of the second loudspeaker unit (4 b) facing away from the first loudspeaker unit (4 a) is adapted to the first inner peripheral surface area (10 a).

12. The speaker module according to claim 1, wherein the outer peripheral outline of the first speaker unit (4 a) is elliptical, and the second speaker unit (4 b) is located at one end in the length direction of the short axis of the first speaker unit (4 a).

13. A loudspeaker module according to any of claims 1-3, 5-10, wherein the first loudspeaker unit (4 a) is a moving-coil low-frequency loudspeaker.

14. A loudspeaker module according to any of claims 1-3, 5-10, wherein the second loudspeaker unit (4 b) is a moving iron tweeter, or a planar voice coil tweeter.

15. An earphone, comprising:

a housing (1), wherein a sound outlet (110) is formed on the housing (1);

the speaker module according to any one of claims 1-14, the first speaker unit (4 a) being provided in the housing (1), the outer surface of the first diaphragm group (4 a 21) being directed towards the sound outlet aperture (110), the second speaker unit (4 b) being provided in the housing (1), the second speaker unit (4 b) being directed towards the sound outlet aperture (110).